Aircraft



FIG. 1 is a front view of an aircraft according to the present design;

FIG. 2 is a rear view of the aircraft;

FIG. 3 is a right side view of the aircraft;

FIG. 4 is a left side view of the aircraft;

FIG. 5 is a plan view of the aircraft;

FIG. 6 is a bottom view of the aircraft;

FIG. 7 is a front perspective view of the aircraft; and,

FIG. 8 is a rear perspective view of the aircraft.

Features shown by dashed lines are not considered part of the claimed design. 

The ornamental design for aircraft, as shown and described. 